Cleaner-head for vacuum cleaning apparatus.



F. S. BLAOKALL. CLEANER HEAD FOR VACUUM CLEANING APPARATUS. APPLIOATION IILED AUG. 19, 1908.

1 4 Patented Aug. 3, 1909.

WPV.

UNITED STATES PATENT OFFICE.

FREDERICK S. BLACKALL, OF WOODMONT, CONNECTICUT, ASSIGNOR TO BLACKALL AND BALDWIN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CLEANER-HEAD FOR VACUUM CLEANING APPARATUS.

Specification of Letters Patent.

Patented Aug. 3, 1909 Application filed August 19, 1908. Serial No. 449,201.

To all whom it may concern:

Be it known that I, FREDERICK S. BLACK- ALL, a citizen of the United States, residing at Woodmont, in the county of New Haven and State of Connecticut, have invented a certain new and useful Im rovement in Cleaner-Heads for Vacuum Cliaaning Apparatus, of which the following is a specification.

The invention relates to cleaner heads or suction nozzles for receiving dust from carpets, rugs and other articles, in vacuum cleaning operations, and the object of the invention is to provide a head adapted to agitate the surface overwhich it is assed and by disturbing the na or pile to oosen the dust therein and faci 'tate its removal.

The invention consists in certain novel features and details of construction and arrangement by which the above object is attained, to be hereinafter described.

The accompanying drawings form a part of this specification and show an approved form of the invention.

Figure 1 is a front view of a head constructed in accordance with the invention. Fig. 2 is a corresponding view of the under face. Fig. 3 is a central vertical transverse section. Fig. 4 is a horizontal section of a portion, on the line 44 in Fig. 3. Fig. 5 is a transverse vertical section showing a portion on a larger scale.

Similar letters of reference indicate the same parts in all the figures.

A is a tube designed to be connected by a flexible hose, not shown, to a chamber in which a partial vacuum is maintained and which may be understood to be part of any approved form of air-suction device, usually termed vacuum cleaning apparatus.

The heads may be of various shapes adapted for service under various conditions; the

form shown is constructed for removing dust from floor-coverings as carpets and the like by being moved thereon with its open lower face in contact with the surface thereof, and comprises a hollow body B of triangular shape, curved slightly toward the rear and terminating at the apex in a screw-threaded boss B in which the pipe A is screwed. The long narrow .under face B is open to admit dust to the hollow interior and is rounded at the front and rear edges to allow the head I to be moved freely upon the surface to be cleaned.

In order to loosen the dust the lower face is provided with a number of bridges or partitions C extending across the o ening in the lower face B and projecting slightly below the latter. The bridges are preferably in the form of low partitions, as shown, dividing the long opening or slot in the under face into a plurality of small orifices b, and are slightly curved from front to rear on their working edges. The function of the bridges is to 'disturb the pileas the head is moved in contact with the car et and thus free the dust which is immediately drawn through the orifices b and delivered to the dust-chamber, not shown.

The bridges may be disposed in any desired manner, but assuming the direction of movement of the head to be generally transverse to the longitudinal under face, it is preferable to set the bridges or partitions C diagonally across such face so that in moving upon the pile the latter is momentarily forced down and again released, the agita tion thus produced liberating the dust.

To avoid a disposition of the head to run to one side by reason of the engagement of the partitions with the pile, as is the case when all the partitions are inclined in'the same direction, it is preferable to incline a portion in one direction and the remainder in the opposite direction; As shown in the drawin s the partitions are in two oppositely incline series with the larger central opening thus produced divided into two by a central transverse partition.

The partitions or bridges may be cast 1ntegrally with the head but should be of sufficient hardness to resist the wear to whlch they are subjected in service, and to reduce the weight of the head it is preferably of aluminum while the bridges are independently formed, as illustrated in the drawings, and are lates of steel or other wear-resisting materia secured in slits or kerfs produced in the lower portion of the head.

Modifications may be made in the forms and proportions without de arting from the invention. Any number of bridges maybe employed and they may beshaped and arranged as experience or conditions of servlce. may dictate.

I claim 1. In a cleaner-head, a hollow body having along narrow slot in-its under face, and a series of partitions extendin diagonally across said slot and projecting be ow said face.

2. In a cleaner-head, a hollow body having a series of openings in its under face, an partitions between said 0 enings, said partitions pro'ecting below sai face and arranged diagonalfy to the direction of travel of said head, a portion of said partitions inclined in one direction and the others in an opposite direction. I a

3. In a cleaner-head, a hollow body having an open slot in its lower face, and a series of partltions secured in the walls of said slot and extending diagonally across the latter and projecting below said lower face.

4. In a cleaner-head, a hollow body, and artitions of wear resisting material extendmg across the acting face of said body dia onally to the direction of travel of the hea the said partitions rojectin below the said acting face of the ead an having curved lower edges. 1 25 In testimony that I claim the invention above set forth I aflix my signature, in presence of two witnesses. v

FREDERICK S. BLAOKALL. v Witnesses:

M. F. THAYER, Y 'RoY J. SOULER. 

